Keep going straight for two blocks, then turn right on Elm street and you'll run right into it.
一直走,过两个街区,然后往右拐是埃尔姆街,再往前走,迎面就是莫特街。
but that was precisely the idea adopted in some of the early instruments (seismometers) for recording earthquake waves.
但是早期记录地震波的仪器(测震仪)正是采用了这种思路。